Ah, this takes me back. Timex Velo Trak was a wristwatch with cyclocomputer functions that could be strapped to the handlebar in a mount that allowed it to function as the computer, while off the bike it served as a watch. When this came out (industry bike show in Atlantic City, about 1987, pre-Interbike) I predicted a smash hit, and the subsequent sinking of the device convinced me that I am the perfect reverse indicator for trends. Bet against me and you won't go wrong.